Multifunctional portable electronic device

Abstract

A multifunctional portable electronic device ( 100 ) that easily allows a user to test their breath-alcohol level is described. A power module ( 10 ) supplies a working voltage to an alcohol-testing module ( 12 ) and an output voltage generated according to a test result from the alcohol-testing module. A signal processor converts the output voltage of the alcohol-testing module into a digital signal and calculates out a corresponding alcohol concentration value that can be displayed on a display module ( 18 ).

1 . A multifunctional portable electronic device comprising:
 a power module;   an alcohol-testing module electronically connected to the power module, the power module supplying a working voltage to the alcohol-testing module and the alcohol-testing module generating an output voltage according to a test result from the alcohol-testing module;   a signal processor electronically connected with the alcohol-testing module, the signal processor converting the output voltage of the alcohol-testing module into a digital signal used for calculating a corresponding alcohol concentration value; and   a display module electronically connected with the alcohol-testing module for displaying the alcohol concentration value received from the signal processor.   
   
   
       2 . The multifunctional portable electronic device of  claim 1 , wherein the signal processor includes an analog-to-digital converter and a CPU electronically connected to each other, the analog-to-digital converter is connected to the alcohol-testing module, and the CPU is connected to the display module. 
   
   
       3 . The multifunctional portable electronic device of  claim 2 , wherein the alcohol-testing module includes an alcohol-sensing unit and a load resistor, and has a first electrical contact point connected with the power module, a second electrical contact point connected to ground and a third electrical contact point connected with one end of the load resistor, the voltage across the load resistor comprising the output voltage of the alcohol-testing module. 
   
   
       4 . The multifunctional portable electronic device of  claim 3 , wherein the other end of the load resistor grounded, and a node is defined between the load resistor and the third electrical contact point, a voltage output from the node is equal to an output voltage of the alcohol-testing module. 
   
   
       5 . The multifunctional portable electronic device of  claim 3 , wherein the alcohol-sensing unit includes a heater and a detector, the two ends of the heater are respectively connected to the first electrical contact point and the second electrical contact point, the middle of the heater is connected with one end of the detector, the other end of the detector is connected with the third electrical contact point. 
   
   
       6 . The multifunctional portable electronic device of  claim 3 , wherein the alcohol-sensing unit includes a semiconductor gas sensor. 
   
   
       7 . The multifunctional portable electronic device of  claim 6 , wherein the alcohol-sensing unit includes a heater and a detector, the two ends of the heater connected to the first electrical contact point and the second electrical contact point, respectively, the middle of the heater connected to one end of the detector, and the other end of the detector is connected to the third electrical contact point. 
   
   
       8 . The multifunctional portable electronic device of  claim 7 , wherein the detector includes an alcohol detecting material, and when used, the resistance of the detector changes in response to the amount of alcohold detected. 
   
   
       9 . The multifunctional portable electronic device of  claim 7 , wherein the detector includes tin dioxide as a detecting material. 
   
   
       10 . The multifunctional portable electronic device of  claim 9 , wherein the heater is an inductance heater. 
   
   
       11 . The multifunctional portable electronic device of  claim 7 , wherein the output voltage of the alcohol-sensing unit is an analog signal fed into the analog-to-digital converter, the analog-to-digital converter converts the output voltage into a digital signal usable by the CPU, the CPU calculating a corresponding alcohol concentration value based on the digital signal received from the analog-to-digital converter, and the CPU sends the alcohol concentration value to the display module. 
   
   
       12 . The multifunctional portable electronic device of  claim 1 , wherein the working voltage of the alcohol-sensing unit is about 0.9V±0.05V.